MT WILSON NO 2, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(046006) MT WILSON NO 2
From Year=1948 To Year=2006
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	13	14	21	62	160	340	543	523	399	211	58	15	2359
57	7	7	12	43	124	288	481	462	344	169	38	8	1982
60	2	2	4	22	79	216	389	372	264	113	18	2	1483
65	0	0	0	5	29	116	241	228	147	47	3	0	815
70	0	0	0	1	8	48	115	107	61	13	0	0	352

Cooling Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. This is done for each day of the month and summed.
Table updated on Jul 28, 2006
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu